ADVANCED OXIDATION PROCESSES FOR WATER-TREATMENT - PHOTOCHEMICAL PROCESSES

Various photochemical advanced oxidation processes that have been sugg ested for the oxidation of organic compounds in water and waste water are described. In the first part pollutant degradation by ultraviolet photolysis is presented. Further, the various photochemical processes such as H2O2/UV, O-3/W, O-3/H2O2/UV, TiO2/UV, and photo-Fenton reactio n are discussed. Finally, the sonochemical degradation of organic comp ounds is included. The utilization of photochemical methods for water purification is illustrated by examples concerning the degradation of organic pollutants in water. Some probable reaction mechanisms are als o given.